Tailoring the terahertz absorption in the quantum wells

被引：13
|
作者：
Hosseini, Mehdi [1 ]
机构：
[1] Shiraz Univ Technol, Dept Phys, Shiraz 31371555, Iran
来源：
OPTIK | 2016年 / 127卷 / 10期
关键词：
Quantum well; Terahertz; Optical properties; INTERSUBBAND OPTICAL-ABSORPTION; THIN-FILM TRANSISTORS; ELECTRIC-FIELD; DOT; IMPURITY; COEFFICIENTS; PRESSURE;
D O I：
10.1016/j.ijleo.2016.01.158
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
In this paper the optical properties of an inverse parabolic quantum well mixed with a square quantum well has been investigated. The Schrodinger equation has been solved using the numerical method and all the eigen-energies and wave functions are obtained. Furthermore, using the density matrix approach and perturbation method, the absorption coefficients and refractive index changes have been calculated and analyzed. The results show that for appropriate values of quantum well parameters the absorption coefficient peak lies in the terahertz frequency range. Also, the stability of the absorption peak due to small random defects in quantum well is investigated. (C) 2016 Published by Elsevier GmbH.
引用
收藏
页码：4554 / 4558
页数：5
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